Introduction to the building gate: Walking along the ancient Tonggu stone road, you will see the main building gate of the village. The gatehouse is a wooden structure with cornices and brackets, which is rough and spacious. The threshold has been deeply dented by years of wear and tear, and the large green stone at the door has been polished smooth and translucent. The wall stacks extending in the shape of an "eight" along both sides of the door are made of blue bricks. There are colorful calligraphy and paintings on the wall stacks. They have been damaged over time and the content has become mysterious, but you can still feel its weight. There is a Tutu House next to the tower door. When entering, strangers must first kowtow to the Tutu Bodhisattva. The entire perimeter of the house is covered with high blue brick walls, also known as fire walls, and the walls are covered with mottled moss from the past. There are turtle heads built at the four corners of the wall, which are tall and mighty, showing masculinity and resembling the heroic and fighting spears and halberds of the ancestors of the Yang clan.